Weight Watchers Crustless Sweet Potato Pie Recipe: Spiced Custard That Feels Like Cheat Day

This Weight Watchers crustless sweet potato pie recipe delivers all the cozy, spiced comfort of classic pie without the guilt—rich custard, warm cinnamon notes, and a velvety texture that feels like a dessert treat.

The secret lies in swapping traditional crust for a light almond flour base that adds structure without the calories, while egg whites and sugar substitutes keep it diet-friendly without sacrificing flavor.

I developed this after years of craving sweet potato pie but struggling to find a version that fit my Weight Watchers points—now it’s my go-to for gatherings where I want to indulge without derailing progress.

The filling is where the magic happens: smooth, lightly spiced sweet potato purée blended with warm cinnamon, nutmeg, and just enough vanilla to enhance the natural sweetness.

A touch of Greek yogurt replaces heavy cream, adding protein and tang to balance the sweetness, while a sugar substitute (like erythritol or monk fruit) keeps it low-calorie. The almond flour crust, pressed into a thin, crisp edge, bakes up golden and sturdy—no flaky layers needed to satisfy cravings.

Baking at 350°F for 45 minutes ensures the custard sets perfectly, with a gentle wobble in the center for that classic pie texture.

What makes this recipe truly special is how it tricks your taste buds into thinking it’s the real deal. The aroma alone—warm spices and caramelized sweet potatoes—fills the kitchen, and the first bite delivers creamy, spiced perfection with none of the heaviness.

Each slice clocks in at under 150 calories and 3 points on Weight Watchers, making it easy to enjoy without the post-dinner guilt. The best part? It’s foolproof—no advanced techniques, just a few simple steps that yield a dessert worthy of any holiday table.

Serve it warm with a dollop of light whipped cream or a sprinkle of cinnamon for extra flair, and watch it disappear.

This pie proves you don’t need to compromise on flavor to stay on track—just a few smart swaps can turn a classic dessert into a guilt-free indulgence. Ready to bake? Here’s how to make it happen.

Ingredients for weight watchers crustless sweet potato pie

Sweet potatoes, almond flour, and egg whites—these simple swaps make classic pie guilt-free yet indulgent.

Sweet potatoes are the star here, so pick ones with vibrant orange flesh—they’ll purée smoother and sweeter. I always grab the larger ones from Trader Joe’s because their skin stays on longer during baking, which helps hold moisture. Roast them whole at 400°F until tender (about 45 minutes), then purée until completely smooth—no lumps allowed. For the almond flour, Bob’s Red Mill is my go-to; it’s finely ground and adds the perfect crispness to the crust without overpowering the filling. The Greek yogurt is non-negotiable here—it’s what gives that creamy, tangy balance that mimics heavy cream, and Fage 5% plain is my top pick for the right texture.

No erythritol? Monk fruit blend works 1:1, but skip the stevia if you can—it can leave a bitter aftertaste. Short on egg whites? Aquafaba (chickpea brine) works at 3 tbsp per egg white, though the texture won’t be as light. The spices are where the magic happens—Penzeys brand for cinnamon and nutmeg is worth the splurge, but the grocery store stuff is fine if it’s fresh. For the crust, press the almond flour firmly into the pie dish to create a sturdy base—it’ll hold up beautifully without cracking. And if you’re worried about the crust being too dry, a quick brush with almond milk before baking adds moisture without adding calories.

This pie keeps beautifully—3-4 days in the fridge if stored properly, and it actually tastes better the next day as the flavors meld. For serving, I like to whip the light cream with a sprinkle of cinnamon right before adding it to the pie. Freezing? Portion into individual slices and wrap tightly with plastic wrap—up to 2 months in the freezer, though the crust may soften slightly. Reheat slices at 350°F for 10 minutes to restore that warm, gooey center. Trust me, the first time you serve this to someone who thinks it’s the real deal, you’ll get high praise—and zero guilt.

Step-by-step instructions for Weight Watchers crustless sweet potato pie

Here's how to create a rich, spiced custard that delivers all the comfort of classic sweet potato pie—without the guilt or crust.

Preheat your oven to 375°F and grease a 9-inch pie dish with the 1 tablespoon refined coconut oil, making sure to coat the bottom and sides evenly. This prevents sticking and creates a clean release later. While the oven heats, peel and cube the 2 whole large sweet potatoes, then place them in a microwave-safe bowl and cover with a damp paper towel.

Microwave on high for 8-10 minutes, stirring halfway, until the sweet potatoes are fork-tender. Drain any excess liquid, then transfer them to a food processor or high-powered blender. Purée until completely smooth—no lumps should remain. This silky texture is the foundation of your custard. Taste a small spoonful; if it needs more sweetness, add a pinch of the granulated erythritol now, but we'll adjust flavors more precisely later.

In a large mixing bowl, combine the 4 whole large egg whites, 0.5 cup nonfat Greek yogurt, 0.75 cup granulated erythritol, 1 teaspoon pure vanilla extract, 1.5 teaspoons ground cinnamon, 0.25 teaspoon ground nutmeg, 0.25 teaspoon ground ginger, and 0.25 teaspoon salt. Whisk vigorously for 2-3 minutes until the mixture is completely smooth and all the spices are fully dissolved. This step ensures even distribution of flavor and prevents gritty texture from the spices.

Next, slowly pour in the 0.25 cup unsweetened almond milk while continuing to whisk. The mixture should thicken slightly but remain pourable. Here's the thing—if you add the milk too quickly, you'll create bubbles that can weaken the custard's structure. Pour it in a thin stream against the side of the bowl to minimize aeration. Finally, gently fold in the sweet potato purée using a spatula, being careful not to incorporate too many air bubbles.

Pour the custard mixture into the prepared pie dish, spreading it evenly with a spatula. Tap the dish gently on the counter a few times to release any trapped air bubbles that might have formed during mixing. Place the pie dish on a baking sheet (to catch any potential drips) and bake for 45-50 minutes. The custard is done when the center is just set but still slightly wobbly—like a firm Jell-O. A toothpick inserted should come out clean with a few moist crumbs clinging to it.

I know it seems counterintuitive, but don't overbake. The pie will continue to set as it cools, and overbaking can make it dry. If the edges brown too quickly, tent the dish with aluminum foil to protect them while the center finishes baking. The final texture should be creamy with a slight set—neither too firm nor too runny.

Remove the pie from the oven and let it cool completely at room temperature for 1 hour. This gradual cooling prevents cracking and allows the flavors to meld. Once cooled, refrigerate for at least 2 hours (or up to 24 hours) to fully set the custard. The longer it chills, the more pronounced the sweet potato flavor becomes.

When ready to serve, top each slice with a dollop of light whipped cream for a touch of indulgence. This pie is naturally rich from the sweet potatoes and spices, so the whipped cream adds a light, airy contrast without overpowering the dish. For an extra-special presentation, dust with a light layer of ground cinnamon or a sprinkle of granulated erythritol before serving.

Store any leftovers in an airtight container in the refrigerator for up to 4 days. When reheating, cover the pie with plastic wrap and warm in a 350°F oven for 15-20 minutes until just heated through. Microwaving can make the custard watery, so oven reheating preserves the perfect texture.

This pie is the ultimate comfort food with a nutritional twist—creamy, spiced, and satisfying without the heavy crust. The secret lies in the balance of ingredients: the sweet potatoes provide natural sweetness, the egg whites create structure, and the spices deliver that classic sweet potato pie warmth. Serve with a simple green salad or some crusty bread to round out the meal perfectly.

Perfect pairings for this recipe

Warm Spiced Drinks

Pair this pie with a warm spiced apple cider—simmer 4 cups apple cider with 1 cinnamon stick, 2 star anise pods, and 1 tsp vanilla extract for 15 minutes.

The warm spices echo the pie’s flavors beautifully. For a caffeine boost, add a shot of espresso to create a cozy dessert drink. 🍎

Light Creamy Toppings

Serve with light coconut whipped cream—whip ½ cup chilled coconut cream with 1 tsp erythritol until fluffy. It adds tropical notes that complement the sweet potatoes.

Another great option is vanilla Greek yogurt dollops—mix ½ cup nonfat Greek yogurt with ½ tsp vanilla extract and a pinch of cinnamon for a protein-packed topping. 🥥

Crunchy Contrasts

Add toasted pecans or walnuts for texture—toss ¼ cup chopped nuts with ½ tsp cinnamon and toast in a dry pan for 3-4 minutes until fragrant. Sprinkle over slices for a satisfying crunch. For extra indulgence, try dark chocolate shavings (70% cocoa or higher) to balance the sweetness. 🌰